human error

dekker counterfactuals tunnel

Counterfactuals

Counterfactuals If, like me, you grew up during the Friends era, you might remember the scene where Ross is upset because he has to tell Rachel that Emily insists they can’t be friends. Ross: “I don’t want Rachel to hate

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devops and psychological safety

The Psychological Safety Community Relaunch

The online Psychological Safety Community has been live since early 2021, and currently has around 800 members. It’s completely free to join, and we have some great conversations there. A lot of newsletter topics and sharing items come from discussions

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psychological safety word cloud

Psychological Safety in 2023: unwrapped!

Psychological Safety in 2023 Thanks so much for all your support, feedback, encouragement, ideas, insights and collaboration over 2023! It’s genuinely a privilege to be able to do this work, and I appreciate every single one of you. I recently

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Normal accident theory

Normal Accidents

Normal Accidents Charles Perrow is regarded as a pivotal figure in the theory of why and how things fail. He served as a sociology professor at Yale and Stanford and was primarily focused on the influence of large organisations on

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